Kawasaki Eco-Business Forum
February 1st, 201８

SDGs Future City Initiatives
Toward Sustainable Revitalization
Tsuyoshi Fujita*, Minoru Fujii*Director of Social Environmental Systems
Research Center, NIES
Appointed Professor Tokyo Institute forTechnology
fujita77@nies.go.jp
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ＳＤＧｓに関する国内動向
National Initiatives for SDGs Future Cities〇2016 Dec. 政府「持続可能な開発目標（ＳＤＧｓ）推進本部（内閣総理大臣）が「持続可能な開発目標（ＳＤＧｓ）実施指針」を決定
SDGs Implementation Strategy Plan under theleadership of Prime Minister〇2017. July「地方公共団体における持続可能な開発目標（ＳＤＧｓ）」のために自治体SDGｓ検討
Guideline for SDGs for Municipal Governments〇2018．May- SDGｓ未来都市の選定
National SDGｓFutute City Initiative2気候変動に備える標準的な都市・地域
SDGｓ through Climate Change Driven

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ISETS’15, Nov. 2015

Resource occupancy
Resource occupancy of iron= (amount of iron) x (period)

PeriodIron in a car(life of a car)Amount of iron

Reversible (potentiallysustainable) use

Resource occupancy of land
= (area of land) x (period)
Wood in a house

Period(tree growth)
Area of land for wood supply

Reversible (potentiallysustainable) use

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ISETS’15, Nov. 2015

Indicator for assessing impact on sustainability
Useful functions (products or services)

Resources Time Footprint (years) =Resource occupancy
Resource occupancy of material

Capacity

kg×years kg

Resource occupancy of land

m2×years

Resource occupancy of labor

person×years person

Resource occupancy of pollutant emission capkgm2(kg/year)Time
To provide a product or service, we occupy multiple things. Comparison of
resource occupancy to total capacity in each different aspect provides us acommon indicator which is expressed by the unit of years.

5Resources Time Footprint

ISETS’15, Nov. 2015

OA OTROC RTF
ratio (years)
TAResource occupancy (amount x time) / capacity (amount)where ORT represents occupancy ratio time (years), OA is amount of occupancy (kg, km2, orperson, depending on the aspect), OT is period of occupancy (years), TA is total capacity (kg, km2,or person, depending on the aspect).

CAROC RTF
ratio TS(years)

Resource occupancy (amount ) / capacity (speed)
where CA represents the amount of consumption of freshwater or emissions of pollutants (kg), andTS is the total rate of supply or removal (kg/year).

For example, in a case of freshwater, as the capacity, supply speed offreshwater is more important than the total abundance of freshwater
preserved in lakes, underground water vein etc.

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ISETS’15, Nov. 2015

RTF for different aspects
ROC ratio is an indicator to evaluate a change (especially brought by acountermeasure) in terms of sustainability by standardizing impacts on multilateral
aspects into common unit: years.

RTF of land
occupied area [ m 2 ]  period [ y ]ROC ratio of land [ y ] total area [ m 2 ]RTF of material
ROC ratio of material [ y ] e.g. Indicator implies
that the efficient useof our existing
infrastructures isimportant to enhance
our sustainability

occupied amount [ kg ]  period [ y ]recoverabl e amount [ kg ]  accumurati on [ kg ]RTF of labor
ROC ratio of labor [ y ] occupied workors [ person ]  period [ y ]total workors [ person ]RTF of environmental capacity to absorb pollutants
ROC ratio of env . cap . [ y ] pollutants emission [ kg ]removal rate of pollutants [ kg / y ]Less RTF means more sustainable (close to a steady state)7

Case study

ISETS’15, Nov. 2015

Heat pump vs. Conventional boiler

Source: HPTCJ

8ISETS’15, Nov. 2015

Material constitution of heat pump

Iron
CopperIron
CopperPlastic
Aluminum
Others

Source: Panasonic9

Importance of metals

ISETS’15, Nov. 2015

Proven reserves (t)
1012
109
106
103

Fe Cu
Source: Ministry of Environment, Japan10

Case study (condition)

ISETS’15, Nov. 2015

Functionalunit

Hot water supply to a house (3person household) for 10 years

System forcomparison

Heat pump
Material

Aspectsconsidered

Resourceoccupancy ofCu

Gas boiler

CO2emission

Land

Resourceoccupancy ofpollutantemission cap

Fuelconsumption
is converted tothe occupancyof land11

Result (Change in RTF)
Gas boiler

ISETS’15, Nov. 2015

Heat pump (Hot water supply, 10 years)
Change in per capita ROC-r
Change in per[y]capita RTF (y)

0.5
0Cu
-0.5

CO2

Land Land (PV)(Cedar)-1-1.5-2-2.5

Fossil fuel consumption
converted to land occupancy
12Applications of the indicator
Change to renewable
resources

Comparison between
regions, countries, etc.

Wood
786

Coal (elect.
generation)
Coal (steel)

4Tree growth20-2

Material(iron)

CO2CO2-4-6

Land(wood)

Per capita
RTF
ROC-rper capita
per(y)
year

Changecapita
RTF
Changeinin perper-capita
ROC-r(y) (y)Iron

ISETS’15, Nov. 2015

654Japan

3China210Iron

Iron

LandCO2-8

Fujii et al., 2014

Fujii et al., 201513

Integrative Eco-city Simulation Modelfor Municipal Governments• Location theory• Regional science(Weber, Alonso, etc.)
Land UseScenario2010

Population

2020

Regional Future Scenario(Local GDP, Population Land area)
SpatialDistribution(Residential)• Multi-Variable
Integration Theory

SpatialDistribution(Industrial)

Industrial
Location
Scenario

Future Spatial Scenario

Built
Environment
Transition

Local Energy
Management
System
• CEMS• ADR

Transportation
Management
SystemIndustrial
EnergyManagement
SystemWaste
Management
SystemRecycle andIndustrial symbiosis• Local energy• FEMS• Industrial Symbiosis• Eco Finance / Behavior Science14

Interactive Eco-policy Planning System in Asia
Fukushima Shinchi
TownshipNational Institute for Env. Studies

Community Assist Tablet Network
Energy Assist
Life Assist
Community
Information AssistLocal
Needs
Regional
Environment
Information

Planning for
Sustainable Future

Urban SpatialAnalysis

Integrated
Modelling

Local
environment
diagnosis

Future scenario
assessment

Simulation forrecovery roadmap
復興まちづくりのシミュレーション

Tech. and policy
inventory-low carbon tech-circulation tech-industrial symbiosis-policy / regulation-land use control
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